45results about How to "Long run" patented technology

The invention discloses a river pollution tracing method and system based on underground water quality pollution monitoring, and relates to the technical field of river pollution tracing. According to the river pollution tracing method based on underground water quality pollution monitoring, the real-time concentration value of each pollutant in underground water is obtained in real time and analyzed to obtain the underground water pollution real-time evaluation index; according to the method, a plurality of abnormal measurement points with abnormal concentration in a set area are identified, and the traceability position coordinate of each pollutant with abnormal concentration in underground water in a river is analyzed, so that the real-time evaluation index of underground water pollution can be continuously calculated by acquiring the pollutant concentration data of each measurement point in real time; and whether the pollutant concentration exceeds the preset range or not is judged in time, so that the defects of hysteresis and untimely data updating of traditional water quality monitoring are overcome, dynamic monitoring of the pollutant concentration can be realized, and quick response when the pollutant is abnormally increased is ensured.

The invention discloses a data-driven risk assessment method for salt deposition characteristics of easily-crystallized components of a multi-fluid. The method comprises the following steps: firstly, collecting salt deposition related characteristic data of easily-crystallized components of the multi-fluid to construct a sample database, preprocessing the data to form a preprocessing database, and dividing the preprocessing database into a test set and a verification set according to a certain proportion; then constructing a particle swarm optimization algorithm to optimize the radial basis function neural network, and carrying out prediction analysis based on the particle swarm optimization algorithm to optimize the radial basis function neural network; comparing and analyzing a result obtained by prediction and analysis with actual data, and verifying the prediction precision and reliability of the established radial basis function neural network model through indexes such as a root mean square error and the like; and finally, evaluating the salt deposition risk of the easily-crystallized component of the multi-element fluid by using the radial basis function neural network model. According to the method, the salt deposition risk in the complex multi-fluid environment can be rapidly and quantitatively predicted, the equipment failure detection rate is increased, and safe, stable and long-period operation of a multi-fluid salt deposition high-risk equipment system is promoted.

The invention discloses a non-user air conditioner regulation and control modeling method considering power grid interaction and user comfort, and relates to the field of air conditioner regulation and control, and the method comprises the steps: obtaining indoor and outdoor state data of an air conditioner through a monitoring sensor, carrying out the preprocessing of the state data, and constructing an air conditioner power prediction model in combination with a neural network technology; obtaining an air conditioner load demand based on the air conditioner power prediction model, and combining the air conditioner load demand with the power grid demand response signal to design a demand response mechanism; and based on the demand response mechanism, an optimal control strategy model with the user comfort level as the target is established, a simulated annealing algorithm is adopted for conducting partition solving on the optimal control strategy model, and an air conditioner regulation and control result is determined according to the solving result. According to the invention, through real-time data analysis and a prediction model, system operation parameters are dynamically adjusted, so that energy efficiency maximization and cost minimization are realized, and adaptability and response capability of the system to power grid demand changes are enhanced.

The utility model discloses a mechanical sealing mechanism for an inner guide wheel, which is characterized in that the inner guide wheel is arranged on an equipment shaft through a bearing, and the bearing is arranged in a cavity of the inner guide wheel; the mechanical sealing mechanism comprises an outer sealing unit and an inner sealing unit which are installed on an equipment shaft, and the inner sealing unit is installed in an inner guide wheel cavity and located on the inner side of a bearing. The guide wheel sealing device is convenient to install, reliable to use and capable of reducing maintenance frequency and field environmental pollution, prolonging the service life of equipment and guaranteeing smooth production.

The application discloses an AnDMBR dynamic membrane assembly for sludge anaerobic digestion, which comprises a sealed membrane frame, a plurality of flat plate membranes and a plurality of detachable aeration pipes; the sealed membrane frame is used for bearing various components of the AnDMBR dynamic membrane assembly and is in the shape of a cuboid composed of a stainless steel grid; the plurality of flat plate membranes are arranged in parallel and equidistantly in the sealed membrane frame; a membrane water outlet is arranged above the flat plate membranes, and the height of the membrane water outlet is higher than the upper surface of the sealed membrane frame; the gap between the plurality of flat plate membranes is filled with conductive particles; the plurality of detachable aeration pipes utilize the circulating biogas from the air guide holes to form a cross flow on the surface of the flat plate membranes and disturb the conductive particles between the flat plate membranes. The application effectively solves the problem of flat plate membrane surface mud cake deposition caused by the operation of AnDMBR at high sludge concentration, prolongs the service life of the dynamic membrane assembly, and improves the anaerobic digestion performance of the reactor.

The utility model discloses an environment-friendly public toilet with a rainwater collecting, recycling and flushing device, which belongs to the field of environment-friendly public toiles.The environment-friendly public toilet comprises a public toilet body, a storage box is fixedly connected to one side of the movable environment-friendly public toilet body, a collecting hopper is fixedly connected to the upper portion of one side of the movable environment-friendly public toilet body, and the collecting hopper is communicated with the storage box through a conveying pipe. The storage box is fixedly connected with the movable environment-friendly public toilet body through an output pipe, a filter frame is arranged in an inner cavity of the storage box, butt joint blocks are fixedly connected to the two sides of the filter frame, and clamping blocks are fixedly connected to one sides of the butt joint blocks; through cooperative use of the devices, the maintenance convenience is improved, the cleanliness and the service life of the filter frame are effectively guaranteed, and a solid foundation is laid for long-term and stable operation of the public toilet.

The invention provides a carbon fiber reinforced polyether-ether-ketone self-lubricating composite material and a preparation method and application thereof.The preparation method comprises the steps that carbon fiber serves as an anode, voltage is applied to an electrolyte solution, electrochemical oxidation treatment is conducted, hydroxylated carbon fiber is obtained, the hydroxylated carbon fiber and 2-amino-5-nitrobenzothiazole are mixed, and the carbon fiber reinforced polyether-ether-ketone self-lubricating composite material is obtained. Adding an anhydrous modified reaction solvent, and reacting at 25-40 DEG C for 4-10 hours to obtain modified carbon fibers; and melting and granulating the self-lubricating composite material: mixing the modified carbon fiber, polyether-ether-ketone, a lubricant and an auxiliary agent in a high-speed mixer for 10-20 minutes, extruding by using a double-screw extruder, cooling, and granulating to obtain the carbon fiber reinforced polyether-ether-ketone self-lubricating composite material. The carbon fiber reinforced polyether-ether-ketone self-lubricating composite material is applied to self-lubricating mechanical parts. According to the self-lubricating composite material, the self-lubricating performance is improved, the interface bonding energy between the carbon fibers and the polyether-ether-ketone is enhanced, and the self-lubricating composite material has good mechanical performance.

The invention discloses an IT asset management system and method based on data analysis, and relates to the technical field of business information management and intelligent decision, and the system comprises a data fusion module, a digital accompanying shadow construction module, a deduction analysis module, a decision generation module and a dynamic coupling relation digital accompanying shadow calibration module. According to the method, a dynamic digital accompanying shadow containing a physical environment and business logic dual coupling relationship is constructed, and simulation deduction of operation and maintenance operation is carried out on the dynamic digital accompanying shadow, so that fundamental transformation from passive response type operation and maintenance to active prediction type risk management is realized. The method can reveal and quantify hidden cascading risks generated due to physical proximity or business dependence, so that an operation and maintenance team can predict potential chain influences on the whole production system before executing any operation, most secondary fault risks are eliminated in the bud state on the premise that actual production safety is not affected, and the production efficiency is improved. And the stability and the operation toughness of the system are enhanced.

The application provides a double-coating lithium iron phosphate positive electrode sheet, a preparation method and application thereof. The preparation method comprises the following steps: mixing modified large-particle lithium iron phosphate, modified small-particle lithium iron phosphate, a conductive agent, a binder and a solvent to obtain a first slurry and a second slurry; adopting double-layer slot extrusion coating to coat the first slurry on the surface of a current collector and coat the second slurry on the surface of the first slurry; and drying and rolling to obtain the double-coating lithium iron phosphate positive electrode sheet; the modified large-particle lithium iron phosphate is doped with Ti and Nb, and the modified small-particle lithium iron phosphate is doped with Mg and Al. The application adopts a multi-element doped positive electrode material combined with a double-layer coating preparation method to avoid the shortcomings of LFP materials, improve the rate performance, high-temperature performance and cycle performance of LFP, and has the advantages of simple preparation process and easy industrial production. The prepared positive electrode material and the secondary battery using the same have excellent comprehensive performance, and have a wide application prospect in the field of power batteries.

The present disclosure relates to a polyvinyl chloride production process, and specifically provides a system and process for recovering cold in a hydrogen chloride and acetylene gas dehydration process. It comprises a mixing unit, a deep cooling deacidification unit and a heat exchange unit in sequence; the mixing unit comprises an acetylene cooler, a hydrogen chloride cooler and a mixer, the mixer mixes the acetylene in the acetylene cooler with the hydrogen chloride in the hydrogen chloride cooler, and transports the mixture to the deep cooling deacidification unit; the deep cooling deacidification unit comprises a graphite cooler and an acid mist collector. The heat exchange unit heats the gas mixture at the outlet of the deep cooling deacidification unit, and the heat exchange unit is divided into a primary heat exchange unit and a secondary heat exchange unit. The problem that the cold collection in the polyvinyl chloride production process in the prior art cannot be applied to actual industrial production is solved.

The invention relates to a hydrocracking catalyst and a preparation method and application thereof, and the method comprises the following steps: S1, carrying out molding treatment on a Y-type molecular sieve rich in mesopores to obtain a carrier; and S2, loading a metal active component on the carrier. When the catalyst prepared by the method is used for hydrocracking reaction of hydrocarbon raw oil, relatively high activity can be obtained.

The invention discloses a thunder and lightning management system and method for a traction power supply network, and aims to improve rapid and accurate monitoring and management of thunder and lightning faults of the traction power supply network, provide stable and reliable low-power-consumption power consumption management and improve the stability and fault processing efficiency of the traction power supply network. An intelligent discharge monitoring device is installed on the overvoltage discharger, and overvoltage signals are collected and wirelessly transmitted to a data monitoring center. The overvoltage signal acquisition module is integrated in the monitoring device to realize signal isolation acquisition. The solar power supply assembly is matched with the micro-power-consumption power management module and comprises a two-stage energy storage structure and various protection chips, so that stable and reliable power supply is ensured. The data monitoring center receives the data, and can locate the fault position, analyze the data and give an early warning. The equipment is distinguished by the equipment ID, the fault is positioned by longitude and latitude, and the operation data is visually processed. Intelligent dynamic monitoring of the traction power supply network is integrally realized, and the stability and fault processing efficiency of the power supply network are improved.

The utility model discloses an air quality monitor, including the case, the both sides of its upper end are equipped with a plurality of air outlet, is equipped with the heat dissipation fan in the air outlet, the lower end bottom of case is equipped with a plurality of air intake mechanism for leading in air, and the air intake mechanism includes ventilation unit, and it includes the fixed seat in the case, still includes the ventilation pipe of horizontal rotatable installation on the fixed seat, the ventilation pipe penetrates the case and extends, and its extension end is equipped with a plurality of central symmetry distribution's connecting column, and the outside of a plurality of connecting columns is covered with the moistureproof screen of cylinder, and the bottom of a plurality of connecting columns is equipped with the base, drive unit, it sets up in the case, and with ventilation pipe transmission connection, is used for driving ventilation pipe horizontal rotation, cleaning unit, it has a plurality of, and the outside of ventilation pipe extension end is centrally symmetric and sets up, is used for cleaning the moistureproof screen surface. Such design air inlet is not easy to block, and has the function of moistureproof, and therefore equipment whole service life is longer.

This invention relates to the field of internal combustion engine fuel supply, specifically to a mechanical fuel circuit on / off control device and a mechanically controlled fuel injector. The mechanical fuel circuit on / off control device includes a plunger sleeve, a plunger, and a plunger cover. The plunger sleeve has an axial hole, an inlet port, and an outlet port. The plunger has an insertion portion inserted into the axial hole. Two channels are formed between the end face of the insertion portion and its circumferential surface. The plunger cover has a frustum inserted into the axial hole. The end face of the frustum adjacent to the insertion portion has a communicating groove. When the inlet port is connected to one of the channels on the insertion portion, the communicating groove is simultaneously connected to both channels, and the outlet port is connected to the other channel. This invention controls the on / off of the fuel circuit by the rotation of the plunger within the plunger sleeve. This control process does not rely on any electronic components, but is completed solely by the mechanical structure itself, thus avoiding failure due to electromagnetic interference.

The invention discloses a preparation method of a positive electrode material, the positive electrode material and a lithium-sulfur battery, and the preparation method of the positive electrode material comprises the following steps: pretreating a carbon nanotube to obtain an open carbon nanotube; the method comprises the following steps: putting an open carbon nanotube into a container, and vacuumizing the container until the vacuum degree is 0.05-0.1 Pa; keeping the vacuum degree, and injecting a metal catalyst solution into the container to soak the open carbon nanotubes to obtain a precursor mixture; the precursor mixture is dried and subjected to heat treatment, the metal catalyst is converted into metal particles, the opening carbon nanotubes are filled with the metal particles, and a carbon nanotube composite material is obtained; and adding sulfur into the carbon nanotube composite material, grinding and heating to obtain the positive electrode material. According to the present invention, the metal catalyst is efficiently coated with the carbon nano-tube through the negative pressure liquid phase method, such that the catalytic activity and the stability of the catalyst are improved, the shuttle effect in the lithium-sulfur battery is reduced, and the long-term effect and the stability of the positive electrode material are improved.

The utility model discloses a mine bulk material conveying, transferring and collecting device, and relates to the technical field of transferring and collecting, the mine bulk material conveying, transferring and collecting device comprises a discharging assembly, a collecting box and a middle frame, the middle frame is connected with supporting legs, the bottom of the discharging assembly is inserted into the collecting box, and the middle frame is provided with a material guide groove, a heavy buffer bed and a buffer carrier roller; the top of the material guide groove is communicated with the opening in the bottom of the material collecting box, the heavy buffering bed is arranged below the material guide groove, and the buffering carrier roller is arranged at the bottom of the heavy buffering bed. The material falling impact force is reduced through the heavy buffer bed and the buffer carrier rollers, and the service life of the device is prolonged.

The utility model discloses a drag type asphalt mixture surface layer temperature information monitoring system belongs to asphalt pavement construction monitoring equipment technical field, including support frame, data acquisition module, lubrication module, wireless transmission module and power module, and the bottom of support frame is equipped with the drag heat insulation bottom plate, and data acquisition module includes data collector and the temperature sensor of being located at the bottom of frame, and lubrication module includes lubricating liquid storage tank and the liquid guide pipe to the bottom surface of bottom plate for preventing asphalt adhesion. The utility model discloses through drag type structure and synchronous movement with paver, realizes continuous temperature monitoring, and integrates wireless transmission and real -time display function, and through high heat -conducting metal bottom plate ensures the temperature measurement accuracy, and combines lubrication and prevents sticking and heat -insulation design, and guarantees the stable operation of system under the high temperature bad environment.

The invention discloses a control system and method for continuously adjusting the output power of a low-clutter system, and the system comprises a local oscillator source, a power divider, and a plurality of klystron amplification branches connected in parallel, the local oscillator source generates an initial microwave signal, the signal is distributed to each klystron amplification branch connected in parallel through the power divider, and the klystron amplification branches are connected in parallel. A PIN electrically controlled attenuator in the klystron amplification branch receives a control voltage from a control system, and a microwave switch receives a digital switch signal from the control system and is used for on-off control of the branch; the signal processed by the klystron amplification branch is amplified by the klystron and then enters the bidirectional coupler, and the bidirectional coupler is used for coupling sampling signals of incident power and reflection power and sending the sampling signals to the control system; the microwave power output by the bidirectional coupler is injected into the plasma; the method has the advantages that the problem that the power regulation range of an existing system is limited, and particularly continuous regulation cannot be achieved in a low-power section is solved.

The utility model discloses a conical polycrystalline silicon reactor capable of rapidly moving particles. The conical polycrystalline silicon reactor comprises a conical reaction section and a settling section, wherein the diameter of the conical reaction section is gradually reduced from top to bottom; the settling section is arranged above the conical reaction section; the top of the settling section is provided with an exhaust pipe, and the side wall of the settling section is provided with a silicon particle feeding pipe which is used for conveying gas and is used as a seed crystal; the upper end of the conical reaction section is communicated with the lower end of the settling section, a solid product outlet pipe is arranged at the bottom of the conical reaction section, and a silicon-containing raw material gas inlet pipe is arranged on the side wall of the conical reaction section; the reaction section of the reactor is conical, silicon particles are high in moving speed, reaction efficiency is high, silane completely reacts, product crystal forms are complete, hydrogen is not contained, product density is high, yield is high, energy consumption is low, amplification is easy, meanwhile, side face feeding and top exhaust design of the settling section are matched, tail gas entrainment is small, tail gas dust is not generated, and product quality is good.

This invention provides a technology that enables water systems equipped with reverse osmosis membrane devices to operate more stably over a longer period. The invention provides a method for operating a reverse osmosis membrane device, a method for controlling slime in a reverse osmosis membrane device, and a water treatment apparatus for implementing the method. The method for operating the reverse osmosis membrane device includes: a first step of intermittently adding an oxidative slime inhibitor and intermittently supplying treated water containing the oxidative slime inhibitor to the reverse osmosis membrane device; and a second step of adding an organic slime inhibitor during periods other than those in the first step and supplying treated water containing the organic slime inhibitor to the reverse osmosis membrane device.

The utility model relates to a high-strength anti-twisting flat high-speed elevator balance cable, which comprises a plurality of cable cores, and every six cable cores are twisted to form a cable. The plurality of wire cores are twisted together to form six groups of cables, and the six groups of cables are wrapped by the outer sheath. Every six wire cores are twisted to form a cable, and a cable filler is arranged in the middle of the cable. Every two of the six groups of cables are adjacent to each other. The utility model aims to overcome the defects in the prior art and provide the high-strength torsion-resistant flat high-speed elevator balance cable, the high-strength performance can meet the requirement of long-time operation of the cable, the torsion-resistant performance also solves the problem of stability of high-speed operation of the cable, and the quality of the cable is effectively improved.

The invention provides a low-energy-loss power output device, and relates to the field of power output devices. The low-energy-loss power output device comprises an energy conversion device and an input device, the output device is arranged on the rear side of the top end of a supporting plate, the energy conversion device is arranged at the front end of the output device, and the input device is arranged at the front end of the energy conversion device. First fixing frames are fixedly connected to the rear ends of the two sides of the top end of the supporting table respectively, a second fixing frame is fixedly connected to the middle of the top end of the supporting table, the input device comprises a fixing plate, and the bottom end of the fixing plate is fixedly connected with the rear side of the top end of the supporting plate. By arranging the input device, power is effectively and stably input into the device, by arranging the energy conversion device, energy output by the motor is effectively converted, excessive loss of the energy is avoided, by arranging the output device, the energy is effectively expanded, and by arranging the one-way bearing, the stability of the whole device during operation is effectively improved.

The present invention provides a catalyst ligand for preparing 1-hexene by trimerization of ethylene, wherein the catalyst ligand contains a chlorinated tripyrrole functional group; the catalyst ligand has a structural formula shown in formula A and / or B. The chlorinated tripyrrole ligand compound provided by the present invention has both the function of a ligand and the function of a promoter. Based on the ligand, the trimerization catalytic system is improved, and the original four-component system of main catalyst, auxiliary catalyst, ligand and promoter is simplified to a three-component system, so that the preparation of the catalytic system is simpler, and the catalytic activity of trimerization is also significantly improved, up to 760kg / g(Cr).h. The high activity and high selectivity of the catalytic system at high temperature enable the reaction to run for a long period of time, have obvious advantages in the industrial process, and are more suitable for the promotion and application of industrial production.

A combustion nozzle and a combustion method based on the combustion of chemical waste gas in a circulating fluidized bed boiler. Currently, the units in service have problems such as poor stable combustion capability without oil injection at low load, severe slagging in the furnace when the boiler is running at high load, and severe high-temperature corrosion of the water-cooled wall, which directly affect the deep peak regulation capability of the thermal power unit. The composition of the present invention includes: a main burner installed at the four corners of the boiler furnace, the central axis of the main burner forms an angle with the water-cooled wall of the furnace α The main burner comprises a plurality of groups of secondary air nozzles and primary air nozzles arranged at intervals. The invention is used for a combustion nozzle and a combustion method for chemical waste gas based on a circulating fluidized bed boiler.

This invention discloses a rotary temperature measuring device for high-temperature and high-pressure combustion chambers in a fan-shaped combustion chamber, belonging to the field of aero-engine testing technology. The device includes an inlet water jacket, an outlet water jacket, a transmission mechanism, and a drive mechanism. The outlet water jacket is connected to the inlet water jacket via a rotary chamber water jacket. The inlet, rotary chamber, and outlet water jackets are each provided with an arc-shaped through-hole to form an arc-shaped gas flow channel. A rotary temperature measuring mechanism is housed within the main chamber formed by the inlet, rotary chamber, and outlet water jackets. The transmission mechanism is located on the outlet water jacket, and its output end extends into the main chamber and connects to the rotary temperature measuring mechanism. The drive mechanism is located on the outlet water jacket and connects to the transmission mechanism. The arc-shaped gas flow channel is effectively water-cooled by the water jacket, thus preventing ablation, bulging, and deformation of nearby components, and preventing jamming of the rotary temperature measuring mechanism. This ensures long-term normal and stable operation of the device and extends its service life.

The utility model discloses a treatment system for high-concentration desizing, slashing and dyeing wastewater, which is characterized in that sewage is subjected to quality-based and split-flow treatment according to different properties, desizing and slashing high-concentration sewage is independently collected and then is lifted to a homogeneous hydrolysis acidification pool and a high-efficiency anaerobic reactor for treatment through a pump, and then effluent is connected to a comprehensive sewage adjusting pool through a sedimentation pool; dyeing wastewater and ground flushing and domestic sewage are discharged to a grid well, a microfiltration grid and a comprehensive sewage adjusting tank; after being treated by different pretreatment processes, the wastewater respectively enters a comprehensive wastewater adjusting tank, and then is subjected to advanced treatment by a high multiplication biological treatment tank, a sedimentation tank, an intermediate water tank, a gas-liquid jet flow biological aeration filter tank, a high density clarification tank and a double-membrane method advanced treatment facility, so that pollutants are comprehensively reduced, and the quality of the effluent meets the production reuse water quality standard; and cyclic utilization can be realized. The system has the advantages of simple treatment flow, small occupied area, low construction cost, low operation cost, high automation degree, convenience in operation and management and the like.

The invention relates to the technical field of low-carbon olefin preparation, and discloses a method and a system for preparing low-carbon olefin by adopting petroleum raw materials and application of the method and the system. The method provided by the invention can be used for producing the low-carbon olefin by directly taking the crude oil as a raw material, and is short in production process route and high in efficiency. And by optimizing the technological process, coking of the cracking furnace can be effectively slowed down, and the operation time is effectively prolonged. In addition, the method provided by the invention also can obtain a relatively high low-carbon olefin yield, and the discharge amount of harmful wastes is small, so that the method meets the requirements of green and sustainable development.

The utility model discloses a test mainboard for a DDR (Double Data Rate) memory bank. The test mainboard comprises a PCB (Printed Circuit Board), a CPU (Central Processing Unit) chip and a plurality of DIMM (Dual In-line Memory Module) connectors, the PCB is provided with a first surface and a second surface which are opposite to each other. The CPU chip is arranged on the first surface of the PCB. And the DIMM connectors are arranged on the second surface of the PCB and are used for being connected with the DDR memory banks in an inserting manner. According to the utility model, the DDR memory bank can be independently heated during testing, the temperature of the CPU chip can be ensured to be within a normal range during testing, and long-term continuous operation is facilitated.

The utility model discloses a drainage device for ditch construction, including two sealing devices, two the sealing device is installed in the ditch with interval to form the waterless construction area, the connecting pipe, the connecting pipe is connected between two sealing devices, is used for guiding the water to avoid the waterless construction area after, the water valve, the water valve is installed in the connecting pipe, and the water that passes through the connecting pipe is discharged to the farmland through the water valve, this device can form dry, stable waterless operation area fast when the local repair construction of ditch, can guarantee that the ditch water flow is not interrupted, can transport normally.

This invention discloses a molten salt energy storage system and its operation method for thermal power plants coupled with compressed carbon dioxide energy storage, belonging to the field of energy storage and peak shaving in thermal power plants. The system includes a molten salt energy storage unit and a compressed carbon dioxide energy storage unit: molten salt is heated by extracted steam after reheating for heat storage; the heat of compression generated by the compressed carbon dioxide is used to heat feedwater and condensate, eliminating the need for an independent heat storage medium; before expansion, carbon dioxide is heated by four stages of extracted steam and high-temperature molten salt, and cold energy recovery is used to liquefy the carbon dioxide in a circulating manner; the operation method includes peak shaving and load reduction operation modes and peak shaving and load increase operation modes. This invention can improve the peak shaving response speed and regulation capability of thermal power plants, increase electricity-to-electricity efficiency by more than 20%, eliminate the need for cooling water and an independent heat storage medium, reduce investment, achieve energy cascade utilization and decoupled operation of compression and expansion, enable boilers to maintain high loads to achieve zero grid connection electricity, avoid frequent start-ups and shutdowns, and extend equipment life.